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Top-Rated Air conditioning pros in Fairfax Station - Updated Nov 2026

Avatar for Relax HVAC, Inc.
Relax HVAC, Inc.
5.0(
32
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Humidifier - Repair or Service

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"I have used Relax Air services twice in the past. On November 19th my water heater stopped producing hot water, I've called Nasser to come over to assess what needed to be done. On Monday Nov. 21st he replaced my old water heater (21 years old) Nasser is honest and very reliable. He is very reasonable with his pricing (I have compared Nasser's pricing to my next door neighbors water heater replacement cost). I would highly recommend Relax Air. A huge THANK YOU to Nasser...Relax Air is the ONLY company for my Heating And Air Conditioning needs!"
Additional Photos
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+12

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Conde Tech Services, LLC
Conde Tech Services, LLC
5.0(
206
)
Ductless Mini-split A/C - Install or Replace

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Our heat went out in the worst conditions...Sunday night with a snowstorm on its way. Matt came out, troubleshooted our furnace and the family was warm in no time. Great customer service and competent expert with over 15 years supporting this areas families"
Gas Fireplace Service
Gas Logs Maintenance
Heat Repair
AC Maintenance
Cleaned outdoor unit

+2

Response time10 hrs
Response rate92%
Recommended by99%of homeowners
Avatar for SwiftPro Heating, Cooling & Plumbing
SwiftPro Heating, Cooling & Plumbing
4.6(
117
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Fairfax Station, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Woke up with the house well above the set temperature. A/C running but no hot air coming out. Put job on Angi at 0830 and got immediately called by SwiftPro. They were the first to call and they had the highest rating of the four that were chosen by Angi. Tech arrived a little after 1100 and quickly figured out what was the problem. Tech identified one part that was the issue and another part that could cause a problem down the road. Tech didn't push the second part but the part wasn't much more so changed out both. Tech did a full inspection of the cooling system without any 'additional' issues. Up and running by 1230."
Tri-County Feeds
Trane Odyssey unit
Attic air handler
Old Armstrong AC
R-22 data plate

+29

Response time4 hrs
Response rate100%
Recommended by43%of homeowners
Avatar for BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
4.9(
32
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."
Additional Photos
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+13

Response time3 hrs
Response rate100%
6 neighbors recently requested a quote
Air We Breathe LLC
5.0(
20
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Air We Breathe strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction. \n \nEmergency calls accepted.

  My Work
  My Work
7 neighbors recently requested a quote
Recommended by55%of homeowners
Avatar for Winds of Valley LLC
Winds of Valley LLC
4.9(
145
)
Central A/C - Service or Repair

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"On a very hot weekend, I lost my air conditioning and could not reach my regular HVAC contractor. I made contact with I-HVAC first thing Monday morning and they fit me into an extremely busy schedule even though I had not used them before. Sam was a good communicator - explaining everything as he worked, providing tips on what I should be doing. I would recommend them whole-heartedly. They are now my regular contractor!"
I-HVAC
I-HVAC
I-HVAC
I-HVAC
I-HVAC

+5

Response time3 hrs
1 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
167
)
Central A/C - Service or RepairCentral Humidifier - Repair or Service

Serving Fairfax Station, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"The best customer service I ve experienced. Immediate telephone response (during a 3-day weekend) and Albert arrived within an hour, diagnosed the problem quickly, made the repair and thanked me for my business. Cost is fair and service is outstanding. Definitely my new HVAC guy, period. Highly recommend you call Magna Tech (Albert) for any HVAC issues."
New !6 Seer 3 Ton Air condition
B-Vent
New 80% Gas Furnace Instal
Ashburn Upgrade
Ashburn upgrade

+4

Response time3 hrs
13 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for TC HVAC Services, LLC
TC HVAC Services, LLC
5.0(
20
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+4 more

Serving Fairfax Station, VA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

With years of experience in the HVAC industry, we are the experts you need to take care of your home or business. We handle all of your HVAC needs with great care. We will treat your home as we would treat our own. Give TC HVAC Services, LLC a call today, we look forward to working with you!

fully installation entire house duct with system
old outdoor
old outdoor
main trunk line the same house
old indoor

+99

Response time3 hrs
Recommended by100%of homeowners
Avatar for OHA HVAC, Plumbing, Chimney & Fireplaces
OHA HVAC, Plumbing, Chimney & Fireplaces
4.9(
27
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Fairfax Station, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"I am so happy with my AC working like it is brand new! I so appreciate Matthew Thomas for finding the problem and getting the job done! His polite conversation and knowledge of the problem made me feel comfortable asking him questions, and his answers were in language I could understand🤣 Thank you OHA, Gail & Mick"
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up

+3

Response time1 day
Response rate100%
8 neighbors recently requested a quote
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FAQs for air conditioning projects in Fairfax Station, VA

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Fairfax Station, VA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.